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- PDB-7s1z: Cryo-EM structure of Human NKCC1 K289NA492EL671C -

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Basic information

Entry
Database: PDB / ID: 7s1z
TitleCryo-EM structure of Human NKCC1 K289NA492EL671C
ComponentsSolute carrier family 12 member 2
KeywordsTRANSPORT PROTEIN / ion transport
Function / homology
Function and homology information


positive regulation of cell volume / positive regulation of aspartate secretion / transepithelial ammonium transport / regulation of matrix metallopeptidase secretion / cell body membrane / inorganic anion import across plasma membrane / inorganic cation import across plasma membrane / chloride:monoatomic cation symporter activity / sodium:potassium:chloride symporter activity / metal ion transmembrane transporter activity ...positive regulation of cell volume / positive regulation of aspartate secretion / transepithelial ammonium transport / regulation of matrix metallopeptidase secretion / cell body membrane / inorganic anion import across plasma membrane / inorganic cation import across plasma membrane / chloride:monoatomic cation symporter activity / sodium:potassium:chloride symporter activity / metal ion transmembrane transporter activity / transepithelial chloride transport / potassium ion transmembrane transporter activity / Cation-coupled Chloride cotransporters / intracellular chloride ion homeostasis / sodium ion homeostasis / negative regulation of vascular wound healing / ammonium transmembrane transport / ammonium channel activity / chloride ion homeostasis / cell projection membrane / cellular response to potassium ion / intracellular potassium ion homeostasis / cellular response to chemokine / T cell chemotaxis / sodium ion import across plasma membrane / potassium ion homeostasis / intracellular sodium ion homeostasis / hyperosmotic response / cell volume homeostasis / gamma-aminobutyric acid signaling pathway / regulation of spontaneous synaptic transmission / maintenance of blood-brain barrier / potassium ion import across plasma membrane / transport across blood-brain barrier / lateral plasma membrane / sodium ion transmembrane transport / monoatomic ion transport / chloride transmembrane transport / basal plasma membrane / cell projection / cell periphery / Hsp90 protein binding / cytoplasmic vesicle membrane / extracellular vesicle / protein-folding chaperone binding / cell body / basolateral plasma membrane / neuron projection / apical plasma membrane / neuronal cell body / protein kinase binding / extracellular exosome / membrane / plasma membrane
Similarity search - Function
Solute carrier family 12 member 1/2 / Solute carrier family 12 member 2 / Amino acid permease, N-terminal / Amino acid permease N-terminal / SLC12A transporter, C-terminal / Solute carrier family 12 / Amino acid permease/ SLC12A domain / SLC12A transporter family / Amino acid permease
Similarity search - Domain/homology
Solute carrier family 12 member 2
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.3 Å
AuthorsZhao, Y.X. / Cao, E.H.
Funding support1items
OrganizationGrant numberCountry
Not funded
CitationJournal: Nat Commun / Year: 2022
Title: Structural basis for inhibition of the Cation-chloride cotransporter NKCC1 by the diuretic drug bumetanide
Authors: Zhao, Y. / Roy, K. / Vidossich, P. / Cancedda, L. / De Vivo, M. / Forbush, B. / Cao, E.
History
DepositionSep 2, 2021Deposition site: RCSB / Processing site: RCSB
Revision 1.0May 25, 2022Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Solute carrier family 12 member 2
B: Solute carrier family 12 member 2


Theoretical massNumber of molelcules
Total (without water)263,7772
Polymers263,7772
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein Solute carrier family 12 member 2 / Basolateral Na-K-Cl symporter / Bumetanide-sensitive sodium-(potassium)-chloride cotransporter 2


Mass: 131888.641 Da / Num. of mol.: 2 / Mutation: K289N,A492E
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: SLC12A2, NKCC1
Production host: Mammalian expression vector BsrGI-MCS-pcDNA3.1 (others)
References: UniProt: P55011

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: Human NKCC1 K289NA492EL671C / Type: COMPLEX / Entity ID: all / Source: RECOMBINANT
Molecular weightExperimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Mammalian expression vector BsrGI-MCS-pcDNA3.1 (others)
Buffer solutionpH: 7.4
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD
Image recordingElectron dose: 1.175 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

SoftwareName: PHENIX / Version: 1.19.1_4122: / Classification: refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.3 Å / Resolution method: DIFFRACTION PATTERN/LAYERLINES / Num. of particles: 536763 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0036560
ELECTRON MICROSCOPYf_angle_d0.6398980
ELECTRON MICROSCOPYf_dihedral_angle_d4.525974
ELECTRON MICROSCOPYf_chiral_restr0.0411094
ELECTRON MICROSCOPYf_plane_restr0.0071126

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